Integrated high-speed signal enhancement technology, stable full speed multi-layer gold deposition PCBA, good conductivity. Di impedance high-speed differential signal pair, self-test without delay. Soft light LED work indicator; Supports X4 X8 x16 slots It is equipped with a cable baffle to facilitate the interconnection of cables inside and outside the chassis. Built in capacity solid-state capacitor and constant voltage filtering. Colour:black Material:PCB Size:18 x 7 x 6CM Package Contents: 1 * adapter card 1 * hand screw 1 * moving stud 1 * fixing plate screw 1 * screwdriver Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.